Front bone

 FRONT

The frontal bone is a broad or flat bone, placed forward and upward and has two portions: one vertical, the scale, and one horizontal, the orbital and nasal cavity ceilings.

Scale

Outer Face: this face is convex and in it we find the following structures:

 Supraorbital Edge

 Frontal Tuber & #8211; 3 centimeters above the supraorbital border

 Superciliary Arches & #8211; protrusions extending laterally to the glabella

 Glabela & #8211; between the two superciliary arches (anthropometric point)

 Metopic Suture & #8211; It is found in some rare cases and is located just above the glabella and extends to the bregma along the median sagittal line. This suture, in childhood, divides the bone in two and can remain for life.

Supra-orbital notch or foramen & #8211; passage of supraorbital vessels and nerves.

Nasal Notch & #8211; rough and irregular range

Nasal Spine & #8211; is located anteriorly and in the center of the nasal notch

Inner Face:

Front Crest

Blind foramen & #8211; it is located at the termination of the frontal crest and it is where the Dura

 

Orbital and Nasal Cavity Ceilings

They form the roof of the orbit, the ethmoid notch (separates the two orbital laminae) and the frontal sinus ostia (anterior to the ethmoid notch). This sinus makes the frontalis a bone with hollow pneumatic bone characteristics.
THE Front hinges with twelve bones: sphenoid, ethmoid, parietal (2), nasal (2), jaw (2), lacrimal (2) and zygomatic (2).

 

FRONT & #8211; PREVIOUS VIEW
 Front Bone - Anterior View
Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000

 

FRONT & #8211; BOTTOM VIEW
Front Bone - Bottom View
Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000.

 

Neurocranium
Eight (08) bones
Occipital (01)
Sphenoid (01)
Ethmoid (01)
Thunderstorm (02)
Parietal (02)